Milling-machine



C. D. OESTERLEIN AND L. H. BLOOD.

MILLING MACHINE APPLICATION HLED APR.9. 1919.

1,330,897; Patented Feb. 17,1920.

5 SHEETS-SHEET I- C. D, OESTERLHN AND L. H. BLOOD,

MILLING MACHINE.

APPLICATION FILED APRAQ. 19 19.

Patented Feb. 17,1920.

5 SHEETSSHEET 2- mm a h P 5 m U g m H. fill-ml. Bj/QW b' w. b

Mfforzzey 0. D. OESIERLEIN AND L. H. BLOOD.

MILLING MACHINE.

APPLICATION FILED APR.9, 19m.

Patented Feb 17,1920.

5 SHEETSSHEET 3.

C. D, (JESTERLELN AND L. H. BLOOD.

MILLING MACHINE.

APPLICATION FILED APR.9,1919. 1 30,897. Patented Feb. 17,1920.

5 SHEETSSHEET 4.

J21 VE'ZZ 3 078! a? I I a; 20 1/ (MW/5 LU, & GE,

yffarnay C. D. OESTERLEIN AND L. H. BLOOD.

MILLING MACHINE.

APPLICATION FILED APR.9. 1919 MM m 70% m a m m fi f m i y uh flWO d a y 3 a WWW 0 6 QM W CHARLES ID. GESTERLEIN AND LOUIS H. BLOOD, OF CINCINNATI, OHIO, ASSIGNORS T0 THE GESTERLEIN MACHINE COMPANY, OF CINCINNATI, OHIO.

MILLING-MACHINE.

Application filed April 9, 1919.

To all whom it may concern Be it known that we, CHARLES D. OEsTEn- LEIN and LoUIs H. BLoon, citizens of the United States, residing at Cincinnati, Hamilton county, Ohio, have invented certain new and useful Improvements in Milling- Machines, of which the following is a specification.

This invention. pertains to milling niachines, and relates to improvements de signed to adapt a machine particularly to manufacturing purposes requiring milling operation on a" large number of similar pieces, and the improvements will be readily understood from the following description taken in connection with the accompanying drawings in which a variety of scales is employed and in which:

Figure 1 is a side elevation of a machine embodying an exemplification of our improvements:

Fig. 2 a plan of the machine:

Fig. 3 a vertical section of the machine in the plane of line b of Figs. 2, 4c, 6, '7 and 12:

Fig. 4 a vertical section of the knee and table in the plane of line a of Figs. 1, 2, 3, and 12:

Fig. 5 a side elevation of the ram, parts appearing in the plane of line b of Figs. 2, 4, 6, 7 and 12:

Fig. 6 a rear elevation of the cam-shaft, parts appearing. in the .plane of line a of Figs. 1, 2, 3, 5, 8 and 9:

F ig. 7 a front elevation of the ram and certain connected parts, parts appearing in vertical section in the planes of lines 0 and (I, in Figs. 1, 2, 3, 5 8 and 9:

, Fig. 8 a vertical section of feed and indexing parts in the planes of lines f, g, and I: in Figs. 2. 9 and 12:

Fig. 9 a plan of certain feed and indexing parts, parts appearing in horizontal section in the plane of line i of Figs. 1, 8, 10 nd 11:

Fig. 10, a side elevation of the indexing cam and indexing levers:

Fig. 11 a front elevation of the same: and

Fig. 12 a plan of the table-bearing and Specification of Letters Patent.

Patented Feb. 17, Serial No. 288,689.

table worm, parts appearing in horizontal section in the plane of lines j of Figs. 1, 3, e, 8, 10 and 11.

In describing our machine we will first describe the details of construct-ion of the exemplifying machine.

General arrangement.

In the drawings, referring particularly to Figs. 1, 2, 3, t and 12 1, indicates the body of the machine:

2, a knee projecting therefrom:

3, 'a. table-bearing supported by the knee:

4, a circular slotted table fitted for rotation in this hearing:

5, a worm-gear secured concentrically below the table:

6, a worm engaging this Worm-gear:

7, a shaft bevel-geared to the shaft of the worm:

8, a pan removably secured to the table bearing and surrounding the table:

8, a longitudinal ram-guide formed in the body above and parallel with the surface of the table, at right angles to the axis of the table.

9, a ram fitted to move endwise in the ramguide.

10, a spindle mounted in this ram with its 'axis parallel to the table axis:

11, a sleeve forming a journal for the spindle and mounted for axial adjustment in the ram:

of the spindle may carry an arbor carrying mg special attention to Figs. 1, 2,

a milling tool, of end-mill or other variety. The cutter may be adjusted to and from the table and, as the ram moves forward,

may operate in substantially radial lines upon work held by the table. By turning the table-worm the table may be angularly adjusted to secure the proper relationship of the cutter to the work, or, the cutter being held at the desired radial distance from the center of the table, the table may be continuously rotated to 'produce circumferential milling upon the work.

It is preferable that the axes of the table and spindle be arranged diagonally so that the portion of the table carrying the work being operated upon is the lowest, the ram moving in a diagonal path parallel with the .face of the table. The. pan 8, being present, may be supplied with liquid lubricant for lubricating the out, and the liquid lubricant may be supplied to the pan, through, for instance, pipe 15 arranged to supply the liquid faster than it can run out of the pan through hole 15. The liquid may be carried as high as the lower edge of the rim of the pan, thus permitting the cutter to work while immersed in lubricant. Provision is made for giving to the table an indexing motion so as to bring to the action of thecutter, successively, the pieces of work carried by the table.

The spindle drive.

Proceeding with the drawings, and giv- 3, and .7

18, indicates a shaft journaled across the body of the machine: A

19, a pulley for rotating this shaft:

20, a housing swiveled upon the shaft:

21, a splined shaft journaled in housing 20 and, projecting at right angles to shaft 18:

22, a bevel-gear fast on the spindle:

23, a shaft carried by the upper end of the sleeve:

24, a bevel pinion on this shaft and engaging bevel-gear 22 25, a flywheel carried by the upper end of the spindle:

26, a socket in the lower end of the spindle for receiving the shank of the cutter-arbor, which may be drawn firmly into the'socket by an axial screw extending through the spindle:

27, a spur-gear on shaft 23:

28, a shaft carried by the upper end 'of the sleeve parallel with shaft 23:

29, a spur-gear on shaft 28 and engaging spur-gear 27:

30, a housing swiveled on the axis of shaft 28; and

31, bevel gears disposed in this housing and connecting splined shaft 21 with shaft 28.

The swiveling of housings 20 and 30, and the splining of shaft 21, permits rotary motion being continuously transmitted to the spindle regardless of the endwise position of the ram, and the flywheel gives steadiness to the rotary motion of the spindle and cutter.

The 1 am motion.

Continuing with the drawings, and giving particular attention to Figs. 1, 2, 3, 5 and 6:

32, indicates a shaft" journaled in one side of the body of the machine, below the ram:

33, a worm-gear fast on this shaft:

34, a removable shaft journaled in the opposite side of the body-of the machine and socketed into shaft 32:

35, a cam' disposed removably on shaft 3%:

35, a counterbalance weight for giving the ram its backward motion:

36, a clutch engagement between the hub of the cam and the inner end of shaft 32:

37, an axial screw disposed in shaft32 and engaging the inner end of shaft 34 and serving to clamp the cam firmly between a shoulder on shaft 34 and the clutcl' d of shaft 32:

38, a roller 'carried by the ram and engaging the periphery of the cam:

39, a carriage adjustable endwise in the ram and carrying the roller:

40, a screw arrangement for adjusting the position. of the roller along the ram; and

41, a binder for holding the adjusting screw firmly in adjusted position.

Through the medium of worm-gear the cam is given one complete revolution at each cycle of operations of the machine. The cam, if of the form shown, gives to the ram a comparatively quick forward motion, to bring the cutter to the work. then moves the ram forward with a slow feeding motion, then permits the ram to rapidly retreat. Selective cams will be employed ,having a periphery suited to the'character of milling to be done and, in case the ram is not to feed, the cam may have a plain circular periphery. The adjusting screw ar rangement 40 permits of the adjustment of T he feeding motion.

Continuing with the drawings, and giving particular attention to Figs. 1 2, 8 and 9:

42, indicates a worm engaging wormgear 33:

43, the shaft of this worm:

44, spur-gearing connecting this shaft with shaft 7 which rotates the table, the member of this gearing on shaft 43 being removable: v

45, a shaft in line with but separate from shaft 7 2 46, the hub of a spur-gear loose" 011 shaft 45:

47, a stud mounted in the rear ofthe body of the machine parallel with shaft 45:

48, a spur-gear carried by hub 46:

49, a spur-gear fast on the stud:

50, change gears fast on the stud and on shaft 43:

51, a-so-called quadrant carrying intermediate gears connecting the change-gears:

52, a clutch for connecting spur-gear 48 with shaft 45, at will:

53, a bevel-gear fast on shaft 45: and

54, a bevel-gear fast on shaft 18.

Prime moving shaft 18 turns shaft 45 continuously and clutch 52, being closed, through the change-gearing, turns worm 42,

and the selection of change-gearing de-- termines the rate of rotation of worm gear 33 and the consequent rate of forward travel.

of the ram. At the same time, gearing 44 causes the continuous turning of shaft 7 which gives angular feeding motion to the table. The mechanism; is thus employed when work carried by the table is being circumferentially fed to the cutter.

Tim inrlcm'ng motion.

Proceeding with the drawings, and giving particular attention to Figs. 1. 2, 3, 8, 9, 10 and l1:

55, indicatesa clutch splined to the inner end of shaft 7 and adapted to have clutching engagement with bevel-gear the periphery of this clutch being provided with a notch forming a radial top, and with an incline facing toward bevcl-gear 56, a removable pin securing this clutch in inactive position:

57, a spring acting on this clutch and tending to throw it to closed position if pin 56 and other restraint be removed:

58, a rock-shaft: I

59, an arm fast on this rock shaft and having an extremity adapted to engage the incline of cam 60, an arm loose on the rock-shaft and having an extremity adapted toengage the radial stop of the cam, this arm being so connected with arm 59 that the two arms will be moved away from the clutch simultaneously, while arm 59 is at liberty to swing inwardly independent of arm 60:

60 springs tending to urge the extremities of arms 59 and 60 toward the axis of clutch 55: v

61, a bell-crank mounted on a stud on the body of the machine, the horizontal arm of this bell-crank being adapted, when depressed, to turn the rock-shaft and move the extremities of arms 59 and 60 out of engagement with the cam:

' tooth adapted, in passing, to engage tooth 62 and rock the bell-crank lever: and

64, a similar dog arranged on the wormgear behind dog 63.

Assume that the table carries a piece of work on the radial side of which the cutter is operating, and that when the cut is completed the table is to be turned to bring the next piece in position for the cutting operation. Assume that there are seventy-two teeth in the worm-gear 5 of the table, so that each revolution of shaft 7 will advance the table angularlv a distance of one tooth,

and assume that the table carriessix pieces of work at equal distances from each other. This would require that shaft 7 be given twelve revolutions 'at each indexing act. When indexing is to be done, then one member of gearing 44 is to be removed, and, also, pin 56 is to be removed. the removal of this pin permitting spring 57 to close clutch 55 and connect shafts 7 and 45. Normally clutch 55 will be held open by the engagement with it of arms 59 and 60.

Assume the cutter to have completed it; radial out. As worm-gear 33 rotates the tooth of dog 63 strikes tooth 62 and releases the clutch which at once engages and permits one rotation of shaft 7, the clutch automatically opening as soon as the tooth of dog 63 has passed tooth 62. This slight angular advance of the table causes the work to move away from the cutter so that the cutter will not drag on the work as the ram retreats. When the cutter shall have proppermit shaft 7 to make eleven rotations and advance the table angularly to bring the next piece of work into the cutting field, whereupon clutch will again automatically open, leaving the table atrest. Dogs 63 and til will be adjusted on the wormgear as desired, and will be selective as regardsthe circumferential length of their teeth.

H and motions.

Proceeding with the drawings, giving particular attention to Figs. 1, 2, 8 and 9 65, indicates a bevel-pinion fast with spur pinion 48: and

66, a hand shaft having a pinion engaging this bevel-pinion.

If clutch 52 be open, the hand-shaft may be employed in adjusting the ram endwise by hand, or in turning the chuck by" hand, clutch being open and gearing 44 being present.

Vi e claim:

1. A milling machine comprising, a rotary \v'orlcliolding table, a rotary cutterspindle with its axis parallel with the axis of the table, automatic indexing means for rotating the table intermittently, and means for reciprocating the axis of the spindle and table relatively to and from each other, combined substantially as set forth.

2. The subject-matter of claim; 1 combined with means for adjusting'the spindle axially.

3. The subject-matter of claim 1 combined with alternative means for rotating the table continuously.

4. A milling machine comprising, a machine body, an internal am-guide formed in said body, a knee projecting from the body below the ram-guide, a work-holding table niounted for rotation on the knee with its axis at right angles to said ram-guide and with its surface parallel with the ram-guide, a ram fitted for reciprocation within said ram-guide and having an end projecting over said knee, and a cutter-spindle mounted for rotation in the projecting end of said ram and having its axis parallel with the axis of rotation of said table, combined substantially as set forth.

5. The subject-matter of claim & combined with means for automatically rccipro eating the ram.

6. The subject-matter of claim 1t combined with means for the adjustment of the ram endwise relative to its reciprocating mechanism.

7. The subject-matter of claim a when the reciprocation of the ram is produced by a cam.

8. The subject-matter of claim t when the recipmcations of the ram are produced by a cam, combined with means for the adjust-- ment of the ram endwise relative to the cam.

9. The subject-matter of claim L when the endwise reciprocation of the ram is produced by a selective changeable cam.

10. The subject-matter of claim 1 when the axes of the table and spindle are arranged at an angle to the vertical, the axis of the spindle being at the lower side of the table.

11. The subject-matter of claim 10 when the table is surrounded by a pan inclosing the table and adapted to inclose a cutter carried by the spindle.

12. The subject-matter of claim 1 combined with means for adjusting the distance between said reciprocating means and the agent reciprocated by it.

13. The subject-matter of claim 1 when the reciprocating means is a cam.

ll. The subject-matter of claim 1 when said reciprocating motion is produced by a selective changeable cam.

15. The subject-matter of claim 1 combined with a rotary member and a clutch forming parts of the automatic indexing means for rotating the table intermittently, a spring for throwing the clutch into engagement, a clutch-tlnowing member disposed between the rotary member and the clutch and serving to normally hold the clutch out of engagement, a dog carried by the rotary member and adapted to engage the clutchthrowing member and move it and permit the clutch to engage temporarily, and a second dog carried by the ro-' tary member and adapted to engage the clutch-throwing member and cause the clutch to engage temporarily for the second time.

CHARLES D. OESTERLEIN. LOUIS H. BLOOD. \Vitnesses:

CHAS. WV. SCHILLING, GEO. M. MEYNGKE. 

